What it means
The clutch pedal position sensor A reports a not learned fault. Pedal position cannot be measured reliably.
At a glance
- Usually lights the check-engine light
How it works
Clutch pedal position sensor A must have a learned reference so the control module can interpret its pedal readings correctly. This code sets when that reference has not been learned or has been lost, such as after a battery disconnect or sensor replacement.
Common causes
Most likely first.
- Adaptation lost after battery disconnect
- Sensor replaced without learn procedure
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
How to diagnose it
- Record freeze-frame data and check live sensor A position to confirm the sensor produces a changing signal as the clutch pedal moves.
- Check service history for a recent battery disconnect, control-module reset, or replacement of sensor A that could have erased or required relearning the reference.
- Inspect sensor A’s connector, wiring, and mounting to make sure a circuit fault or misalignment is not preventing a valid position reading.
- Check for related clutch pedal sensor codes and resolve any electrical or signal faults before attempting a learn procedure.
- Use the vehicle’s service information and a capable scan tool to perform the specified sensor A learn procedure, then verify the learned status.
Common fixes
- Perform the specified clutch pedal position sensor A learn procedure after confirming the signal is stable.
- Correct sensor A mounting or alignment if it prevents a valid reference from being learned.
- Repair any wiring or connector fault that interrupts the sensor reading during learning.
- Replace sensor A only if it cannot provide a valid signal or complete the specified learning procedure.
Can I keep driving?
If the clutch signal is not learned, clutch-related functions or gear changes may be unreliable; limit driving if shifting is affected. Stop if the vehicle cannot select gears predictably.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.